BC378 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 25 V
• Collector-Base Voltage, max: 30 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 1.2 A
• Collector Dissipation: 0.375 W
• DC Current Gain (h_fe): 75 to 260
• Transition Frequency, min: 300 MHz
• Operating and Storage Junction Temperature Range: -65 to +175 °C
• Package: TO-18

Here is an image showing the pin diagram of this transistor.The BC378 transistor can have a current gain of 75 to 260. The gain of the BC378-6 will be in the range from 75 to 150, for the BC378-7 it will be in the range from 125 to 260.The complementary PNP transistor to the BC378 is the BC298.You can replace the BC378 with the BC377.